Calender rack



J. STANLEY AND W. H. CARSON. CALENDER RACK.

APPLICATION FILED JUNE 3. 1921.

L433,9 1 6 Patented 0011 31, 1922A WITNESSES WVE/JTOHS JQames Janieg; Walter E Cans W ATTORNEYS Patented on. 31, 1922.

STATES Pater FINE.

JAMES STANLEY AND \VALTER H. CARSON. OF WEST POINT, GEORGIA.

CALENDER RACK.

Application filed June .3,

To all whom, it may concern:

Be it known that we, JAMns STANLEY and \Vxnrnn H. CARSON, citizens of the United States, and residents of est Point, in the county of Troup and the State of Georgia, have invented certain new and useful Improvements in Calender Racks. of which the following is a specification.

This invention relates to calender-racks especially adapted for use on picking niachines employed in. textile mills.

Briefly stated, an important object of this invention is to provide automatic means whereby the calender-rack is rendered inoperative when the load or strain on the same exceeds a predetermined point.

As set forth in the United States Letters Patent to John H. Tice, No. 1,361,508, the several parts of the calenderq'ack frequently break due to excess strain and production is greatly retarded during the period of repair. It is therefore, an important aim of this invention to provide a calender rack body having a rack or toothed section secured in position by a pair of frangible pins which will be sheared off when the load on the calender rack exceeds the strength of the several pins. By having the toothed section of the rack secured in position by means of the frangible and detachable pins the toothed. section may be readily renewed should one or more of the teeth become mutilated. Further the frangible pins extending through the shank of the rack and the tongue of the toothed section are highly accessible so that the same may be replaced with a minimum consumption of time and a minimum of effort on the part of the attendant.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a perspective of the improved calender rack.

Figure 2 is a side elevation of the same, the shank of the rack being shown in section to illustrate the frangible connection between the toothed section and the shank of the rack.

Figure 3 is a transverse sectional view taken on line 3-3 of Figure 2.

ln the drawing wherein for the purpose of illustration is shown a preferred embodi- 1921. Serial No. 474,838.

ment of the invention the numeral 5 generally designates the improved rack which consists of an elongated shank 6 having a laterally projecting V-shaped integral head 7 to which a detachable head 8 is connected by means of side plates 9. The side plates 9 which are arranged in spaced parallel relation are disposed on opposite sides of the integral head 7 and are securely connected to the same by means of fastening devices '10 possessed of sufficient strength to at all times provide a driving connection between the removable and integral heads.

The side plates 9 form a bearing means for anti-friction elements 13 and M which are rotatably supported in bushings carried by the side plates. As is well known the anti-friction rollers cooperate with the lap pinof the picking machine in the formation of the laps and in order that the rollers 13 and 14 may be readily renewed the side plates may be detached. However, the head of the rack is not possessed of the safety features as outlined in the aforesaid patent as the side plates 9 are securely connected to the integral head 7 by means of the pins 10 which are possessed of ample strength to at all times provide a driving connection between the detachable and integral heads.

Specifically this improvement resides in providing a rack section or toothed section 20 having its under side formed with a longitudinal tongue 21 snugly received in a longitudinal groove 22 formed in the opposed sides of the rack shank 6. In order that the tongue 21 may be held within the groove 22 pair of frangible pins 24 are passed through the end portions of the tongue andv the adjacent portions of the shank. When the-train of gears associated with the toothed section 20 transmits an excessive load to the calender rack the frangible pins 24 are severed so as to break the driving connection between the section 20 and the rack. In order that the toothed section 20 may be prevented from moving into the vicinity of the head of the rack we have reduced the shank for the length of the toothed section to provide a shoulder 26 which contacts with the adjacent end of the toothed section 20 and limits the upward movement of the same. Also the upper end of the tongue 21 contacts with the upper end wall of the groove 22 so as to limit the upward movement of the toothed section.

lly securing the toothed section 20 to the shank of the rack by the frangible pins 24 no excessive load is transmitted to the head oil the rack, which load would be likely to break the parts of the machine associated with the rollers 18 and 14. Further should any of the teeth in the rack section 20 become mutilated the rack-section may be readily renewed without the necessity of renewing the entire shank. This operation may be quickly performed since the section 20 is held in position solely by means of the I pins 2a.

As illustrated in Figure 3, case hardened steel bushings in the tongue 21 and in the adjacent portions of the shank receive the pins 2% so that the pin will not be permitted to bend when the strain is excessive. The presence of the case hardened bushings which are designated by the numeral 30 prevents the openings in the rack from being enlarged. as a result of continued breaking of the pins.

It will be seen that the tongue and groove connection between the rack and the shank provides a means to guide the movement otthe shank upward after the pins have been sheared oil. of course the rack remains stationary after the pins have been sheared off and the shank and head that holds the lap roll and the pin are tree to travel upwardly with the movement of the machine.

Having thus fully described the invention what we claim as new and desire to se cure by Letters Patent is 1. In a picking machine, the combination with a shank having a head rigidly and securely connected thereto and provided with lap pin cooperating means, of a renewable rack associated with said shank, and frangible means connecting the renewable rack to said shank whereby the driving connection between the renewable rack and the shank is broken when the strain exceeds a predetermined point.

2. A calender rack for cotton picking machines comprising a shank having a reduced portion defining a shoulder, a toothed section applied to said reduced portion, trangible means connecting said toothed section to said shank, and a head connected to said shank, said shoulder constituting a means to limit the endwise movement of the toothed section when said frangible means are severed.

3. A calender rack for cotton picking machines comprising a shank having a reduced portion defining a shoulder, a toothed rack section applied to the reduced portion of and said tongue said shank and contacting with said shoul der, and frangible pins connecting said toothed section to said shank.

a. A. calender rack tor cotton picking niachines comprising a shank having a groove, a toothed section having a tongue received in said groove, and frangible means extending through said tongue and said shank.

5. In a picking machine, the combination with a shank having a head rigidly and securely connected thereto, said head being provided with lap pin cooperating means of a renewable rack associated with said shank, and frangible means connecting the renewable rack to said shank whereby the driving connection between the renewable rack and the shank is broken when the strain exceeds a predetermined point, there being means between the renewable rack and the shank to guide the shank withrelation to the rack when the driving, connection is broken.

6. A rack comprising a shank provided with a shoulder and a groove terminating at the shoulder, a toothed. section l'iaving a tongue received in said groove, said shank being provided with aligned openings, and frangible pins extending through said openings and detachably connecting the toothed section to said body, said toothed section having contact with said shoulder.

7. A rack comprising a shank, a rack sociated with said shank and frangible means connecting the rack to the shank, there being a shoulder arranged in the path of travel of said rack to limit the endwise movement ol the rack when the frangible means are severed.

S. A rack for picking machines comprising a shank, a toothed section associated with said shank, there being a tongue and groove connection between the shank and the toothed section, and frangible means extending through said tongue and connecting the toothed section to the shank.

9. A rack for picking machines comprising a shank, a toothed section associated with said shank, there being a tongue and groove connection between the shank and the toothed section, and frangible means extending through said tongue and connecting the toothed section to the shank, said shank being provided with a shoulder constituting a means to limit the endwise movement of the toothed section when the frangible means are severed.

JAMES STANLEY. l hl'JTER H. CARSON 

